Elisabeth Röhm (born April 28, 1973) is a German-born American television actress. She is best known for playing the Assistant District Attorney Serena Southerlyn in the American TV series Law & Order, and as Detective Kate Lockley in the TV series Angel. Description above from the Wikipedia article Elisabeth Röhm, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Elisabeth Röhm plays as Serena Southerlyn in The Oath.
Elisabeth Röhm is the top #1 member of the cast and appears in 72 episodes.

Cory D. Hardrict (born November 9, 1979) is an American actor and film producer. Description above from the Wikipedia article Cory Hardrict, licensed under CC-BY-SA, full list of contributors on Wikipedia  

Cory Hardrict plays as Marcus Turner in The Oath.
Cory Hardrict is the top #2 member of the cast and appears in 28 episodes.

Katrina Law is an American actress. Her parents met during the Vietnam War; her father being a Catholic of German and Italian decent serving in the U.S. armed forces and her mother a Buddhist living in Taiwan, working as a bartender. She represented New Jersey in the Miss Teen USA Pageant. She is also the lead singer and bass player in her band "Soundboard Fiction". She worked alongside director Adrian Picardi with producers Eric Ro and Don Le, to create a low budget web series called "The Resistance". Picardi was the series' official creator and director.

Katrina Law plays as Karen Beach in The Oath.
Katrina Law is the top #3 member of the cast and appears in 18 episodes.

Joseph Julian Soria plays as Pete Ramos in The Oath.
Joseph Julian Soria is the top #4 member of the cast and appears in 18 episodes.

Ryan Christian Kwanten (born 28 November 1976) is an Australian actor and producer. He played Vinnie Patterson from 1997 to 2002 in the Australian soap opera Home and Away. After his stint ended, he joined the American teen drama series Summerland, portraying Jay Robertson. From 2008 to 2014, he played Jason Stackhouse in True Blood. From 2018 to 2019 he produced and starred in the crime drama series The Oath as Steve Hammond. In 2021, he starred in season one of the horror drama anthology series Them as George Bell. In 2022, he portrayed Thomas Weylin in Kindred, a series adaptation based on Octavia E. Butler's celebrated 1979 novel of the same name. Description above from the Wikipedia article Ryan Kwanten, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Ryan Kwanten plays as George Bell in The Oath.
Ryan Kwanten is the top #5 member of the cast and appears in 10 episodes.

From Wikipedia, the free encyclopedia. Arlen Alexander Escarpeta (born April 9, 1981) is a Belizean actor. In 2004, Escarpeta earned critical acclaim for his breakout film role as an honor student caught with a handgun at school in the independent drama American Gun. The film, which premiered at the Toronto Film Festival, also starred Forrest Whitaker, Marcia Gay Harden and Donald Sutherland. The following year, he co-starred with Matthew McConaughey and Matthew Fox in McG's true-life drama We Are Marshall, about the aftermath of the 1970 plane crash that killed Marshall University's football team. Escarpeta was more recently seen in David Wain's comedy, The Ten, which premiered at the 2007 Sundance Film Festival. He had earlier appeared in Carls Franklin's coutroom thriller High Crimes, starring Morgan Freeman and Ashely Judd. Escarpeta first gained attention on the small screen when he starred in the NBC series American Dreams. He played Sam Walker, a young black man dealing with the changing times of the turbulent '60s. His television work also includes guest roles in on such series as Law & Order: Special Victims Unit, Without A Trace, Cold Case, Judging Amy, ER, The Shield, Boomtown, 7th Heaven and Boston Public. In 2009 he played Lawrence, in the horror slasher Friday the 13th. Arlen follows Friday the 13th with leading roles in several features. He next stars in the drama Roslyn, followed by Preston Whitmore's Dough Boys. He also stars as a young LAPD officer on patrol during the racial gang war in the drama 818, on which Escarpeta also serves co-producer. Escarpeta has also been cast in Final Destination 5, the fifth film in the hit horror franchise.

Arlen Escarpeta plays as Damon Byrd in The Oath.
Arlen Escarpeta is the top #6 member of the cast and appears in 10 episodes.

Michael Malarkey is a British-American actor and singer, born in Lebanon. He is best known for his role as Enzo in The Vampire Diaries.

Michael Malarkey plays as Sam Foster in The Oath.
Michael Malarkey is the top #7 member of the cast and appears in 10 episodes.

​From Wikipedia, the free encyclopedia.   Zulay Henao (born May 29, 1979) is a Colombian-Americann film and television actress. She has appeared in movies like Grizzly Park as Lola, Feel the Noise as C.C, Illegal Tender, and S.Darko as Baelyn. Henao was born in Medellín, Colombia to Colombian parents. She and family emigrated to New Jersey. After high school she served three years with the U.S. Army. Henao enrolled at the New York Conservatory For Dramatic Arts to study acting. Description above from the Wikipedia article Zulay Henao , licensed under CC-BY-SA, full list of contributors on Wikipedia.

Zulay Henao plays as Carmen Velasquez in The Oath.
Zulay Henao is the top #8 member of the cast and appears in 8 episodes.

Sebastián Zurita plays as Ricardo Velazquez in The Oath.
Sebastián Zurita is the top #9 member of the cast and appears in 8 episodes.

J. Anthony Pena plays as Carl in The Oath.
J. Anthony Pena is the top #10 member of the cast and appears in 8 episodes.